Island



' (No Model.) 2 Sheets-Sheet 1..

. B. ARNDLD.

MACHINE FOR MAKING AND KNOTTING'IE'RINGEIS.

No. 504,316. Patented Sept. 5, 1893.

I 2 Shets -Shee t 2.

Patented Sept. 5, 1893.

B. ARNOLD.

MACHINE FOR MAKING AND KNOTTING FRINGES.

(No'ModeL) UNITED STATES PATENT OFFICE.

BENJAMIN ARNOLD, OF EAST GREENWIOH, RHODE ISLAND, ASSIGNOR TO THE MERIDEN CURTAIN FIXTURE COMPANY, OF MERIDEN, CON- NEOTICUT.

MACHINE FOR MAKING AND KNOTTING FRINGES.

SPECIFICATION forming part of Letters Patent No. 504,316, dated September 5, 1893.

Application filed December 22, 1892. Serial No 466,020- (No model.)

To aZZ whom it may concern.-

Be it known that I, BENJAMIN ARNOLD, of East Greenwich, in the county of Kent and State of Rhode Island, have invented certain new and useful Improvements in Machines for Making and Knotting Fringes, 850.; and I do hereby declare that'the following is a full,

clear, and exact description thereof, reference.

being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to mechanism for knotting fringes and is an improvement on the invention disclosed in my application for Letters Patent of the United States, Serial No. 455,217, using the same combination of devices in assorting the threads to be tied together as therein set forth but substituting for the knot forming devices of that specification another set of devices for that purpose, diiferently constructed and operated. It is fully illustrated in the accompanying drawings.

Figure l. is a top view of the mechanism with threads of the fringe in position for tying. Figs. 2. to 8 show different progressive positions of the knot forming devices and threads on them while making the knot, enlarged. Fig. 9. shows an elevation of the looping mechanism taken to the left of line 0, 0, Fig. 1, also the camsand their connections that operate the devices. Figs. 10, 11, and 12 representvdiiferent positions of .the winding looper and depressor with thedrawing up jaws, in casting off the loop and closing up of the knot. Fig. 13, is a-vertical section of the winding looper on line 2, z, in Fig. 1. Fig. 14 shows a modified form of the winding looper. Fig. 15 is a vertical section of the modification on line as m Fig. 14. Fig. 16 shows the inner end of the looper plate. Fig. 17 shows a separate view of the gear-wheel.

, This is a set of devices for forming and finishing the knot, adapted to be used with the combination of devices for assorting the threads to be tied, in proper position, shown in my application .above referred to. For that reason enough of that mechanism is shown in Fig. 1 to enable any one to understand the operation of the improvements. The parts taken from that application are constructed and operated in this combination as therein set forth.

In Fig. l the double hook B, has received two loops, one on each point 0, at successive passes of the needle A. The loops are crossed by the turning of the double hook B, to the position of the dotted lines a, a, which are carried into and held by the presser G, by a forward movement of that device before the threads are cut on the hooks by the knives i, 'i. The threads are held in the presser by a slight friction in crossed position bringing every thread together with everythird thread from it, in position for the knot winding device as described in my application referred to.

The knotting mechanism consists of a plate D, held on a pivot F, fast in the top plate of the machine at one end, so as to be free to swing the other end sidewise. This plate D is divided by a hinge v at a short distance from the pivot F, to allow the inner part of it to be moved up and down. A pin f, is inserted in the center of the circle of the inner endof the plate, and a semi-circular opening r, is made around the pin, opening out to the left side of the plate opposite to the pin f, see Fig. 16. A gear wheel g,is held on the'pin f, and a rack h, is held at the right side of the gear, the teeth of thetwo-engaging with each other. The rack h, is held free to slide, in a plate is, fast on plate D. A slot Z, is made through the plate D, over which the rack lies, and a stud n, fast in the rack extends down through the slot Z, to the under side of the plate D, to serve as aguide to that end of the rack and also to connect it with the cam lever that moves'it. A protecting casing m, is placed over the teeth of the gear g, except where the opening out to the left occurs, and except over the rack. A short tube 10, is made fast in the gear near its edge and an opening is made through the gear agreeing with the opening through the tube, and an openingis out in both tube and gear out through their peripheries, 9 5 see Fig. 17. An arm y, is attached to one side of the plate D, by which the plate is moved up and down and sidewise by the rod E, connected by apin to the arm, and attached at the other end to the cam lever H, which has a friction roll w, that runs in a groove in the cam J.

Starting with the plate D, in position of the dotted lines in Fig. 1, the first motion inward given to the cam lever E, by the groove in the cam will throw the plate D, to a horizontal position where it will be stopped by the check 0, which brings the pin f, on one side of the threads e and tube 12, on the other side. A continuation of the motion of the cam lever H, swings the plate D, over to the position shown by the full lines in Fig. 1 with the threads 6' between the pin and tube. At this point the rack h, is moved inward by the cam lever I, which has a friction roll y, that runs in a groove in the other side of the cam J, shown by the dotted lines.

The cam lever I, is connected by the rod D, to the rack h, the motion of which turns the gear g, and winds the threads 6, around the tube 19, and pin f, as follows: The parts are shown enlarged. Fig. 2 shows the position before the rack h, moves. Fig. 3 shows the position after one half turn of the gear g. In Fig.4 the gear has made three fourths of a turn with the thread to the left passing over the end of the tube 19. Fig. 5 shows a full revolution of the gear to the first position. Fig. 6 shows a quarter turn more with the thread to the right in Fig. 5 over the end of the tube, with a section of the depressor S over the thread as in Fig. 10. Fig. 7 shows a half turn back of the gear g, the depressor having pushed the thread down through the tube into the jaws O, as in Fig. 11,and moved up again so as to leave only its pin 8 in the tube 19. At this point the plate D, has a downward motion given to it by a reverse motion of its cam lever, that draws the tube 13, and pin f, out of the threads and leaves them to be drawn up around the pin 8 by the jaws O sufficiently tight for that pin to be drawn entirelyout of the knot and leave it to be drawn up tight by a still further motion downward of the jaws. The plate D, and devices on it are then moved back to the position shown by the dotted lines in Fig. 1 by a reverse motion of the cam lever II, and the cam lever I, also moves the rack h, back and turns the gear wheel g, and its pin f,in proper position to have another set of threads brought over it by the presser G.

In the modification of the loop winder shown in Figs. 14: and 15 the tube 1), is made fast in the plate D, in the center, instead of the pin f, and the gear wheel g, is held to turn on it, with the pin f, made fast in the wheel near its peripherythat is, the positions of the tube and pins are reversed. In this plan the gear in turning Winds the threads by the pin around the tube and the pin Very much in the same way as when the tube was carried around the pin as before described. The

jaws that draw down the loop are held in a clamp o and connected by the bar 0*, to the end of the cam lever B, which has a friction roll a running in a groove in the cam K.

The depressor S consists of a flat bar having the lower end cut away to form a shoulder e and the part below the shoulder is drawn down to form a pin .9 slightly tapering down from the shoulder to the point. This bar S, is held at its upper end by a joint to an arm extending from an upright rod Y, that slides in brackets c 0, attached to the stationary part of the machine. The rod Y, is connected by the bar N, to the cam lever T, which has a friction roll (1', running in a groove on the other side of cam K, shown in dotted lines F. The knot made by these devices is the simple over hand knot usually made in such work.

As before stated the mechanism herein shown and described is for the purpose of tying the knots and may be used in combination with different sets of devices for arranging the threads to be tied and holding them in position for the knotting mechanism to operate upon.

One of the most important points in work of this character is to obtain as exact uniformity or regularity of the knots as possible. This is attained in this combination of the tube and depressor in keeping a steady tension on the threads while the knot is being formed and drawn out, thereby preventing them from becoming unevenly arranged either in their order or shape by reason of being loose in whole or in part.

Having thus described the construction and operation of my improvement, I claim as my invention- 1. In a machine for knotting fringes the combination of a tube and pin arranged to revolve, one around the other and wind the threads in a knot forming loop, with a depressor placed above the tube and having a shoulder to push the threads through the tube to form a knot and a pin at its end for the knot to draw up on, with means for revolving said tube and pin, substantially as specified.

2. In a fringe knotting machine the combination with a thread assorting mechanism, of a plate pivoted to swing horizontally and provided with a hinge in it to allow of a vertical motion at its free end, a gear wheel held to turn on a pin fastened in the plate near its free end, and having a tube inserted in it near its periphery, with a toothed rack held on said plate and arranged to engage with the gear and turn it, with means for moving the plate horizontally and vertically, and means to move the rack, substantially as set forth.

BENJ. ARNOLD. lVitnesses:

E. B. READ, JAMES E. ARNOLD. 

